The new build system relies heavily on long-poll http requests. Is the TFS server behind an appliance, reverse proxy, VPN or firewall which may be dropping these connections?
8. Check Windows System Files. Windows OS comes with a tool that checks and restores corrupted Windows system files. Follow these steps: Type in “sfc/scannow” in the search box
Below steps solved the issue. I changed the server from domain to workgroup and restarted the machine. Again I changed from workgroup to domain and restarted the machine. Goto IIS manager->Application Pools->Right click on Microsoft Team Foundation Server Application Pool->Advance Settings. Under Process Model section, Set the identity again
Fix “503 Service Unavailable Error” in WordPress. Since we know it’s a plugin-name causing issues, it should be deactivated. Navigate to wp-content/plugins/ plugin-name and rename the folder to plugin-name-new. This will automatically deactivate the plugin so you will have access to the WordPress dashboard.
Restart Device. Jika langkah pertama tidak berhasil, cobalah lakukan restart pada device, baik itu HP maupun komputer yang kamu gunakan untuk mengakses YouTube. Kemungkinan kode 503 muncul adalah akibat adanya masalah konfigurasi pada DNS server di router WiFi, jaringan Internet atau perangkat yang digunakan.
XC0pk.
cara mengatasi 503 service unavailable